IMHO, properly installed Buehler's hold up as well as the Redfield type system but you need to follow the supplied instructions on removing the shims from the rings to compensate for variances in scope tube size & getting the bottom of both rings flat against the base. If you have rings that were previously fitted to a different scope or if the shims are missing the odds of getting a proper fit are not good.
It always tickled me that at the bottom of the instructions there was a comment from Maynard Buehler that said "when all else fails, follow the instructions" so I'm assuming that not everyone did.
FYI Weatherby used to picture a lot of their rifles & scopes mounted with Buehler bases & rings.
Not just Weatherby, Maynard's advertising back in the day showed a lot of large bore custom stuff with his mounts. Like 600 Nitro H&H doubles and other top fuelers.
